Practice Free D-DS-FN-23 Exam Online Questions
Refer to the exhibit.
The exhibit shows four graphs labeled as Fig A thorough Fig D.
Which figure represents the entropy function relative to a Boolean classification and is represented by the formula shown in Exhibit?
- A . Fig-A
- B . Fig-B
- C . Fig-C
- D . Fig-D
You have just completed the Discovery phase of a project and finished interviewing the main stakeholders. You have identified the necessary data feeds and are now beginning to set up the analytic sandbox.
What is the next step?
- A . Assess data quality
- B . Perform ELT / ETL
- C . Create data visualizations
- D . Run descriptive statistics for several data sets
There are three criterions for big data analytics projects which include:
– Decision speed
– Analysis flexibility
What is the additional criteria?
- A . Security
- B . Quality
- C . Throughput
- D . Structure
Your company has 3 different sales teams. Each team’s sales manager has developed incentive offers to increase the size of each sales transaction.
Any sales manager whose incentive program can be shown to increase the size of the average sales transaction will receive a bonus. Data are available for the number and average sale amount for transactions offering one of the incentives as well as transactions offering no incentive.
The VP of Sales has asked you to determine analytically if any of the incentive programs has resulted in a demonstrable increase in the average sale amount.
Which analytical technique would be appropriate in this situation?
- A . One-way ANOVA
- B . Multi-way ANOVA
- C . Student’s t-test
- D . Wilcox son Rank Sum Test
Your company has 3 different sales teams. Each team’s sales manager has developed incentive offers to increase the size of each sales transaction.
Any sales manager whose incentive program can be shown to increase the size of the average sales transaction will receive a bonus. Data are available for the number and average sale amount for transactions offering one of the incentives as well as transactions offering no incentive.
The VP of Sales has asked you to determine analytically if any of the incentive programs has resulted in a demonstrable increase in the average sale amount.
Which analytical technique would be appropriate in this situation?
- A . One-way ANOVA
- B . Multi-way ANOVA
- C . Student’s t-test
- D . Wilcox son Rank Sum Test
Which clause is required by all window functions?
- A . OVER()
- B . ORDER BY
- C . RANGE()
- D . PARTITION BY
To ensure a successful analytic project, which key role can consult and advise the project team on the value of end results and how these will be used on a daily basis?
- A . Business User
- B . Project Manager
- C . Data Scientist
- D . Business Intelligence Analyst
When building a K-means clustering model, you notice that the clusters did not segment on variables that you expected.
What should you do?
- A . Decrease the value of K
- B . Multiply each variable by its standard deviation
- C . Add the WSS to each variable
- D . Check that the data was properly scaled
Which word or phrase completes the statement? Mahout is to Hadoop as MADlib is to _______.
- A . PostgreSQL
- B . R
- C . Excel
- D . SAS
In addition to less data movement and the ability to use larger datasets in calculations, what is a benefit of analytical calculations in a database?
- A . quicker time to insight
- B . more efficient handling of categorical values
- C . improved connections between disparate data sources
- D . full use of data aggregation functionality